Charter · In force from 12 Oct 2026

Nine things we promise.

Written before we have users, so nobody can say we changed our mind once there was money in it. If we break one, tell us.

  1. We never say “safe.” Nobody can see who really sent a message. We say what we found, what we measured and what we couldn’t check.
  2. We show our work. Every verdict separates what a program measured from what SI judged, and quotes the exact words behind each claim.
  3. Everyday checking is free. Always. Everyone gets free checks every day, with no account. Plus pays for more checks and more detail. The verdict, the evidence and what to do next are never behind a paywall.
  4. No ads, no affiliate links, no data sales. We don’t sell your data, share it for marketing, or earn a commission by sending you to a security product.
  5. We keep only what we need. Personal details are masked first. Reports are kept for 30 days, private to you unless you choose to share one, and you can delete yours at any time.
  6. We publish our mistakes. Accuracy, including false alarms and misses, goes on the Method page, with a change log for every version.
  7. We don’t scare you. No countdowns, no sirens, no fear marketing. Scams already do that. We use calm words and tell you what to do next.
  8. We never ask for a password, a code or a payment by message. We don’t use passwords at all. You only ever pay when you choose Plus yourself, on Stripe’s page. If a message or call claiming to be SI Check asks for any of these, it isn’t us. Paste it here and we’ll say so.
  9. We say before we change. If these commitments ever change, we say so in public first, and keep the old text visible below.

Change history

DateChange
12 Oct 2026Charter adopted.
12 Oct 2026 Before launch, “Free for people. Always.” became “Everyday checking is free. Always.” to introduce a daily free allowance and the optional Plus subscription. Previous text: “Individuals never pay to check a message. Businesses that build checks into their own products pay for that, and it never changes what individuals get.”